Event between (600217) 11QY100 and star GA0880:02204807 with event index number of 2730707
Geocentric closest approach at 2025/04/01 20:58:22 UTC
J2000 position of star is 06:57:15.2 -00:41:19
Equinox of date position of star is 06:58:22.3 -00:43:09
Stellar brightness G=13.2,
use SENSEUP=32 with the MallinCam and and exposure
time of 500 milli-seconds with the QHY174 camera.
Star is 52 degrees from the moon.
Moon is 17% illuminated.
TNO apparent brightness V=21.6
TNO is 20.4 AU from the Sun
and 20.3 AU from the Earth.
The TNO is moving 15.0
km/sec on the sky relative to the star, or,
3.7 arcsec/hr.
The 1-sigma error in the time of the event is 62 seconds.
The 1-sigma cross-track error in the shadow position is
1436 km.
The TNO has an absolute magnitude Hv=8.2
Diameter=137.4 km assuming a 5% albedo -- 9.2 sec chord
Diameter=56.1 km assuming a 30% albedo -- 3.7 sec chord
Dynamical classification is CENTAURR
Star training set for 600217, (2025/04/01 20:58UT) Object RA Dec mag sep mel Sirius 06:46:15.7 -16:45:05 -1.5 16.31 60 Alhena 06:39:10.2 +16:22:32 1.9 17.75 40 PPM 176522 06:55:41.6 -01:09:37 5.2 0.84 52 PPM 176560 06:58:44.4 -01:24:36 8.2 0.69 53 PPM 176557 06:58:33.0 -00:57:14 9.8 0.23 52 600217 06:58:32.5 -00:43:25 13.2 53 Positions are for equinox of date
Azimuth is measured in degrees eastward from north. North is at an azimuth of 0, due East is at an azimuth of 90 degrees, due South is 180, and due West is 270.
Do not use the listing below for the RECON CPC 1100 telescopes. This is provided for other non-team facilities.
Star training set for 600217, (2025/04/01 20:58UT) Object RA Dec mag sep mel Sirius 06:45:08.0 -16:43:24 -1.5 16.31 60 Alhena 06:37:42.8 +16:23:57 1.9 17.75 40 PPM 176522 06:54:24.6 -01:07:37 5.2 0.84 52 PPM 176560 06:57:27.5 -01:22:29 8.2 0.69 53 PPM 176557 06:57:15.9 -00:55:08 9.8 0.23 52 600217 06:57:15.2 -00:41:19 13.2 52 Positions are for J2000
Event circumstances last updated at 2021/12/02 02:28:43 UT
Marc W. Buie, Southwest Research Institute